Below is a wire that carries current 3I0 before it splits into two rigid wires a

Question

Below is a wire that carries current 3I0 before it splits into two rigid wires after travelling a distance b into B-field. The resistances of the two wires are such that Io goes into the upper wire and 2 I0 goes into the bottom wire. The wires rejoin a distance b before they exit the region of magnetic field. The wires are bent as shown. There is a uniform magnetic field into the page in the shaded area only. B = 0 outside the shaded area. The top wire has a semi-circle of radius b that is outside the region of magnetic field. What is the direction and magnitude of the total force on the full system of wires in terms of a, b, c, B0, and I0, and coordinate unit vectors ? If a = 0.70 m, b = 0.50m, c = 0.2m. I0 = 2. 0A. and B0= 0.10T, the magnitude of the net force is 0 N 0.4 N 0. 6N 0.7N 0.84 1.0N 1.2N 1.4N

Explanation / Answer

B b 0.4

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